rke-ansible

This repo contains an ansible playbook and roles for installing Rancher's RKE based kubernetes cluster.

Instructions

Create Linux VMs for the Kubernetes cluster

You will need some Linux VMs to run your RKE cluster on. You can create these however you like (AWS, GCP, Openstack).

Create a Linux VM for Ansible

Copy your private key to the ansible VM

I copied my private key id_rsa to this directory on the ansible VM.

ubuntu@ansible:~/.ssh$ ls
authorized_keys  id_rsa  id_rsa.pub  known_hosts

Add your RKE IPs to /etc/hosts

Add your RKE VM IPs to your /ect/hosts file on your ansible VM.

Mine looks like this:

ubuntu@ansible:~/.ssh$ cat /etc/hosts
127.0.0.1 localhost
192.168.192.26 kube-1
192.168.192.25 kube-2
192.168.192.22 kube-3
192.168.192.14 kube-4
192.168.192.23 kube-5

Run the playbook

Run this command on the ansible VM:

ubuntu@ansible:~/rke-ansible$ 
export ANSIBLE_HOST_KEY_CHECKING=False
ansible-playbook -i hosts.ini rke-playbook.yml -v

After this runs your RKE Kubernetes cluster should be running. To verify the cluster is running ssh to the Kubernetes master vm and run kubectl get nodes.

Root up and run this on kube-1:

root@kube-1:~# kubectl get nodes
NAME     STATUS   ROLES               AGE     VERSION
kube-1   Ready    controlplane,etcd   8m33s   v1.19.3
kube-2   Ready    controlplane,etcd   8m32s   v1.19.3
kube-3   Ready    worker              8m27s   v1.19.3
kube-4   Ready    worker              8m28s   v1.19.3
kube-5   Ready    worker              8m26s   v1.19.3